Design, Synthesis, and Structure−Activity Relationship Studies of Novel 1-[(1-Acyl-4-piperidyl)methyl]-1<i>H</i>-2-methylimidazo[4,5-<i>c</i>]pyridine Derivatives as Potent, Orally Active Platelet−Activating Factor Antagonists
作者:Elena Carceller、Manuel Merlos、Marta Giral、Dolors Balsa、Julián García-Rafanell、Javier Forn
DOI:10.1021/jm950555i
日期:1996.1.1
2-methylimidazo[4,5-c]pyridine group has led to the identification of a new series of 1-[(1-acyl-4- piperidyl)methyl]-1H-2-methylimidazo[4,5-c]pyridine derivatives as potent, orally active platelet-activating factor (PAF) antagonists. On the basis of the general structure--activity relationship trends found for the acyl substituent in our earlier series, five groups of compounds were tested, diaryl-
用2-甲基咪唑并[4,5-c]吡啶基取代以前的1-酰基-4-[(2-甲基-3-吡啶基)-氰基甲基]哌嗪系列的极性头已导致鉴定出一系列新的1-[(1-酰基-4-哌啶基)甲基] -1H-2-甲基咪唑并[4,5-c]吡啶衍生物作为有效的口服活性血小板活化因子(PAF)拮抗剂。根据我们先前系列中酰基取代基的一般结构-活性关系趋势,测试了五组化合物,二芳基或烷基芳基丙酰基衍生物,其3-羟基取代的类似物以及尿素,氨基甲酸酯和氨基酸衍生品。带有3,3-二苯基丙酰基部分的最佳化合物19 UR-12670)对于体外PAF诱导的血小板凝集测定,ID50 = 0表现出非常高的体外和体内效能IC50 = 0.0076 microM。在正常血压大鼠体内进行PAF诱导的低血压测试时为0086 mg / kg,对于小鼠中PAF诱导的死亡率测试,ID50 = 0.092 mg / kg po,静脉注射ID50 = 0.0008